Results 11 to 20 of about 6,573 (196)

Population structure of Atlantic swordfish (Xiphias gladius L. 1758) (Teleostea, Xiphiidae) using mitochondrial DNA analysis: implications for fisheries management [PDF]

Animal Biodiversity and Conservation, 2011
Recent studies on Atlantic swordfish (Xiphias gladius L. 1758) genetic structure have demonstrated significant heterogeneity but the precise boundary between populations remains to be identified. In this context, genetic diversity was investigated by PCR–
Cecchetti, S., Cimmaruta, R., Garcia, A., Mattiucci, S., Nascetti, G., Santos, M. N.   +5 more
core   +8 more sources

Portuguese commercial fisheries of swordfish, Xiphias gladius

Frontiers in Marine Science, 2014
Swordfish has an important role in Portuguese fisheries. Portuguese commercial swordfish landings were analyzed from 1986 to 2012. Commercial landings of five incidental catches of pelagic sharks (Alopias superciliosus, Alopias vulpinus, Isurus oxyrinchus, Prionace glauca and Sphryna zygaena) were also evaluated for the same period.
Roxo, André, Mendes, Susana, Correia, João   +2 more
openaire   +4 more sources

Histochemical characterisation of oocytes of the swordfish Xiphias gladius

Scientia Marina, 2008
This paper reports a histological, histochemical and immunohistochemical characterisation of growing oocytes of the swordfish Xiphias gladius. The presence and distribution of carbohydrates, proteins, lipids, calcium, iron, vitellogenin/Vg, zona radiata protein/Zrp, metallothionein/Mt, and thyroid hormones/T3-T4 were studied during oogenesis (cortical ...
Ortiz-Delgado, J. B., Porcelloni, S., Fossi, M. C., Sarasquete, C.   +3 more
openaire   +9 more sources

First Metataxonomic Characterisation of Gut Microbiota of Swordfish (Xiphias gladius). [PDF]

Environ Microbiol Rep
This is the first metataxonomic characterisation of gut microbiota of swordfish using next‐generation sequencing. Findings show significant differences in the alpha diversity among the weight categories and the FAO fishing areas. The phylum Pseudomonadota dominated the swordfish gut microbiota, followed by Fusobacteriota. Photobacterium resulted in the
Truant A, Giacometti F, Losasso C, Peruzzo A, Petrin S, Zancato I, Di Leva V, Giaccone V.   +7 more
europepmc   +2 more sources

Almost billfish: convergent longirostry, micro-dentition, and possible glandular sinuses in a large teleost fish from the Upper Cretaceous of Northern Italy. [PDF]

J Anat
A fossil rostrum fragment of a large teleost fish from the Upper Cretaceous of Northern Italy reveals remarkable anatomical convergences with Cenozoic and Recent billfishes (marlins, swordfishes, and akin). The extinct group Plethodidae independently acquired a long snout, micro‐teeth, and oil‐gland sinuses well before the evolution of true billfishes.
Serafini G, Kriwet J, Toldo T, Fornaciari E, Amalfitano J, Carnevale G.   +5 more
europepmc   +2 more sources

Brain Morphology and Quantitative Assessment of Sensory Brain Areas in Southern Bluefin Tuna, Thunnus maccoyii (Scombridae, Teleostei). [PDF]

J Comp Neurol
The absolute and relative volume of major sensory and integrative brain regions of the southern bluefin tuna Thunnus maccoyii are examined using magnetic resonance imaging (MRI). A dominant cerebellum projects into the midbrain ventricular space, while the optic tectum represents a smaller proportion of total brain volume than previously estimated ...
Ha MH, Chapuis L, Glarin R, Moffat B, Wright DK, Dutka TL, Pepperell J, Kerr CC, Yopak KE, Collin SP.   +9 more
europepmc   +2 more sources

FAUNA ICTICA ASOCIADA A LA PESQUERIA DE PEZ ESPADA (XIPHIAS GLADIUS LINNAEUS) FISHES ASSOCIATED WITH THE FISHERY OF SWORDFISH (XIPHIAS GLADIUS LINNAEUS)

Gayana, 2002
Se entrega información sobre la fauna acompañante capturada durante faenas de pesca de pez espada realizadas por dos naves, una artesanal y una industrial, entre noviembre del 2000 y septiembre del 2001. Ambas naves operaron dentro y fuera de la Zona Económica Exclusiva (ZEE), entre los 24°07'S y 37°13'S frente a la costa chilena.
Enzo Acuña, Juan C. Villarroel, Rodrigo Grau   +2 more
openaire   +2 more sources

Metazoan Parasites Infecting Xiphias gladius from the Eastern Coast of Algeria (SW Mediterranean Sea)

Zoodiversity, 2021
Five specimens of Xiphias gladius Linnaeus, 1758 were sampled from the eastern coast of Algeria and examined for their metazoan parasites. Pathological effects of the collected parasites were examined for the whole body of X. gladius.
S. Ramdani, J.-P. Trilles, Z. Ramdane
doaj   +1 more source

Environmental and human factors shape the trophic ecology of a widespread marine predator. [PDF]

J Anim Ecol
Our study reveals how environmental factors and fishing pressure influence swordfish diet, highlighting trophic shifts under future climate scenarios. We provide a novel framework to strengthen our ability to plan for and manage the redistribution of species under global change ensuring that the energetic needs of predators are met.
Fernández-Corredor E, Fuster-Alonso A, Ramírez F, Giménez J, García-Barcelona S, Macías D, Coll M, Navarro J.   +7 more
europepmc   +2 more sources

Survey on Kudoa thyrsites in Sardina pilchardus From the Central Tyrrhenian Sea. [PDF]

J Fish Dis
Journal of Fish Diseases, Volume 48, Issue 7, July 2025.
Cipriani P, Palomba M, Ruggiero L, Mæle S, Giulietti L.   +4 more
europepmc   +2 more sources